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1991 Cadillac DeVille 4.9L Excessive Emissions
Posted to GM Driveability on 6/28/2007 16 Replies

hello, this thing failed smog for nox here are the readings, 15mph hc25, co0.01, nox725, co212.42, 023.12, at 25mph, hc 24, co0.00, nox924, co212.20, 023.37, egr is functioning properly, timing is at spec 10, o2 switches from 180 mv to 828 mv with a rise time ...

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  Related Documents & Media  1991 Cadillac DeVille

 
Message Closed w/FIX

car Vehicle Data

1991 Cadillac DeVille

VIN 1G6CN533XL
Engine4.9 L / 8 cyl / GAS
Trans4-speed Automatic (Electronic)
DeliveryFI / sefi
Emissionsobd1
SymptomsExcessive Emissions
OccursAlways
Message Closed w/FIX

car Vehicle Data

1991 Cadillac DeVille

VIN 1G6CN533XL
Engine4.9 L / 8 cyl / GAS
Trans4-speed Automatic (Electronic)
DeliveryFI / sefi
Emissionsobd1
SymptomsExcessive Emissions
OccursAlways